Home / 154,464,371.90-231,696,557.85-81,653,018.30

Finding the Fourth Proportional to 154,464,371.90, 231,696,557.85 and 81,653,018.30

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Solution

The fourth proportional to 154,464,371.90, 231,696,557.85 and 81,653,018.30 is: 122,479,527.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,464,371.90 : 231,696,557.85 = 81,653,018.30 : x
  2. Step 2: Convert to fraction form
    154,464,371.90/231,696,557.85 = 81,653,018.30/x
  3. Step 3: Cross multiply
    154,464,371.90x = 231,696,557.85 × 81,653,018.30
  4. Step 4: Simplify right side
    154,464,371.90x = 18,918,723,278,173,056
  5. Step 5: Solve for x
    x = 18,918,723,278,173,056/154,464,371.90
  6. Step 6: Final answer
    x = 122,479,527.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.